Evidence Might Suggest Otherwise
Although there is a distinct counterculture that suggests that the men survived, there have been bits of evidence that suggest otherwise. Roughly one month after the men escaped, a Norwegian boat driver reported seeing a body about 17 miles from the Golden Gate Bridge. The man did not know of the escapees, and the San Francisco police jumped on the case immediately...
But Alas
Unfortunately, the man filed the claim far too late after he supposedly saw the body, and the police were never able to locate what he was looking for. Strangely, his description of the floating figure matched what the Alcatraz prisoners wore perfectly. However, some researchers think that, based on their data, the men wouldn't have ended up close to the Golden Gate Bridge.